Farmers of Forty Centuries 



A History of the Permanent Agriculture in China, Korea, and Japan 



By F. H. KING, D.Sc. 



Late Professor of Agricultural Physics, University of Wisconsin 



Written by one of America's foremost Agriculturists, who made a close 

 study of the methods by which the Chinese have supported 500,000,000 

 people for four thousand years on an area smaller than the improved farm 

 land of the United States. 



"No more important practical contribution to geographic knowledge has 

 been published in many years than 'Farmers of Forty Centuries.' " — Review. 



A book of strong interest for the botanist and agriculturist, as well as for 

 the practical man and the student, containing 450 pages and 248 illustrations. 



The price, postpaid, is $2.50. Orders should be sent to 



Mrs. F. H. King, 



Madison, Wisconsin. 



LETTERING SHEETS 



We offer a series of six sheets of letters, figures, words, and symbols for the lettering 

 of diagrams and drawings for line cut reproduction. 



The lettering is in bold type in two sizes, and in italics. The sheets are Dennison's 

 best quality white gummed paper. A wealth of words and abbreviations relative to time, 

 weights, measures, climate, and experimental results, as well as chemical symbols, abbrevi- 

 ations used in morphology; etc., will give these sheets a wide utility. 



Sample on request 



Per sheet 10c Set of 6 sheets 50c Six sets $2.00 



THE PLANT WORLD TUCSON, ARIZONA 



KODAK FINISHING 



We Guarantee to get the best possible results from your 



exposures. Mail orders attended to promptly. 



Catalogue and Price List Free 



The Smith Sporting Goods Company 



TUCSON, ARIZONA 



